<template>
  <div class="tab-bar-item" @click="itemClick">
    <div v-if="!isActive">
      <slot name="item-icon"></slot>
    </div>
    <div v-else>
      <slot name="item-icon-active"></slot>
    </div>
    <div :style="activeStyle">
      <slot name="item-text"></slot>
    </div>
  </div>
</template>

<script>
export default {
  name: "TabBarItem",
  props: {
    link: String,
    activeColor: {
      type: String,
      default: '#FF5777',
    }
  },
  computed: {
    isActive() {
      return this.$route.path.indexOf(this.link) !== -1
    },
    activeStyle() {
      return this.isActive ? {color: this.activeColor} : {};
    }
  },
  methods: {
    itemClick() {
      this.$router.replace(this.link).catch(err => err)
    },
  }
}
</script>

<style scoped>

.tab-bar-item {
  flex: 1; /* 均等平分父容器的宽度 */
  text-align: center;
  height: 49px; /* 一般tabbar高度都为49px  */
  font-size: 14px;
}

.tab-bar-item img {
  width: 24px;
  height: 24px;
  margin-top: 3px;
  vertical-align: middle; /*图片底部默认会多3个像素 */
  margin-bottom: 2px;
}

.active {
  color: deeppink
}
</style>
